Metal-pouring apparatus.



- R. H. IRONS, W. BR OWN & J. W. SHEPERDSON.

METAL POURING APPARATUS. APPLICATION FILED sums 28, 1915.

Patented Aug. 31, 1915.

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COLUMBIA PLANOURAPH 60.,WAsrnNuToN, D. c.

R. H. IRONS, W. BROWN & J. W. SHEPERDSON.

'METAL POURING APPARATUS. APPLICATION FjLED JUNEZB. 1915.

l 152,3 1 9. Patented Aug. 31; 1915.

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I? ZJ TL- rrnp srirrns PATENT @FFT@ I15 ROBERT H. IRONS, WILLIAM BBUXVN,AND JOHN :VV. SHEFERDSON, OF HARRISBURG,

' PENNSYLVANIA.

METAL-TOURING APPARATUS.

To all whom it may concern Be it known that we, ROBERT H. IRONS, WILLIAMBROWN, citizens of the United States, and JOHN W. SrrnrnRnsoN, a subjectof the King of Great Britain, residing at Harrisburg, in the county ofDauphin and State of Pennsylvania, have invented certain new and usefulImprovements in Metal- Pouring Apparatus; and we do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake anduse the same.

This invention relates to metal pouring and casting apparatuses, and hasfor an object to provide a pouring system embodying a sprue platecarrying a central pouring fountain with ducts radiating from thefountain, and with a plurality of laterals leading from the radial ductsand communicating with the outlets, such outlets being in communicationwith the pouring fountain through uniform runs of ducts and ductsoffering equal resistance to the flow of the molten metal between thefountain and the independent and individual outlets.

A further object of the invention is to provide a sprue plate having acentral pouring fountain and a plurality of outlets spaced about thesprue plate communicating with the fountain by ducts, the resistancefrom the fountain to each outlet beingthe equivalent of the resistanceto each other outlet in the sprue plate, and each of said outletscovered by a mold in substantially the usual and ordinary manner.

With these and other objects in view the invention consists in certainnovel features of construction, combinationand arrangement of parts aswill be hereinafter more fully described and claimed.

In the drawings: Figure l is a viewof the sprue plate showing in onequarter the furrows for the receipt of the conduit bricks, in anotherquarter the conduit bricks in plan, in the third quarter the conduitbricks in horizontal section, and in the fourth quarter the structurecomplete with the mold set over the outlets. Fig. 2 is a view in sideelevation of the structure showing the same number of molds in positionas shown at Fig. 1. Fig. 8 is a plan view of a sprue plate havingconduits arranged differently than at Fig. 1. Fig. 4 is a plan view of aSpecification of Letters Patent.

Patented Aug. 31, 1915.

Application filed June 28, 1915. Serial No. 36.854.

which forms the subject-matter of this application embodies a sprueplate of any usual. and ordmaryform shown at Figs. 1 and 4 as circular,and at Fig. 3 as rectangular, it being understood, of course, that theparticular form or general shape of the sprue plate is not essential tothe present invention.

At some substantially central point in the sprue plate 10 or 10 apouring opening llorll is produced above which and resting upon thesprue plate a pouring fountain 12 is erected. Leading from the pouringopening 11 or 11 in symmetrical order, as for instance, radially'asshown at Figs. 1 and 4 and in alinement as shown at Fig. 3, are furrowsin which are located the conduit bricks. The furrows in the sprue platesthemselves are indicated at 13, and are similar in each sprue plateirrespective of the shape and conform to the. transverse sectional areaof the conduitbricks 14:. At certain-positions in therun of the conduitsT-bricks 15 are employed to connect the several conduits with thelaterals leading therefrom. 1 1

At the extremities of the terminal laterals sprue bricks 16 are employedhaving outlets 17 therein. Over the outlets 17 molds 18 are erected asindicated at Figs. 1 and 2, each of said molds covering and embracing asingle outlet.

From an examination of Figs. 1, 3 and 1, which illustrate threeembodiments of the present invention, it will be obvious that eachoutlet is at a distance from the fountainexactly equal to each otheroutlet measured through the conduits, and that the resistance of theconduits leading to each outlet is exactly the same as the resistanceleading to each other outlet from the fact that equal number of lateralsare in each case taken off from the main conduit and that the terminallaterals are in each case grouped about their feeders to offer identicalresistance.

It is well known, of course, that in the casting of ingots from eitherthe openhearth or the Bessemer processes two forms of pouring areemployed, ordinarily referred toas top pouring and bottom pouring. It isalso known that for quality and uniformity of the resulting ingot, thebottom pouring process-is preferred, but that it has been founddiiiicult and heretofore impossible to so group a large number of moldsabout a central fountain as to make the uniform distribution of themetal possible, and

to offer equal facility for each mold to fill from the metal-conveyingconduit. Where a plurality of molds are located upon a single conduit itis .well known that some molds will fill more readily than other molds,and that the metal will at times suddenly flow out of a mold that hastaken steel rapidly into a mold that has lagged behind in the filling,producing what is known in the art as surging which is detrimental tothe :qualityof the ingot. By the location of each mold .over an outletin a terminalconduit brickno opportunity is afforded for surging, whileall of the molds will fill slowly and uniformly from the bottom whichproduces an ingot of the highest possible quality.

7 It should .be'noted that the present apparatus differs 'from all knownapparatuses employing radialducts in that provision is "madeito locateeach mold over an outlet in through the conduits.

2. A metal pouring apparatus comprising a sprue plate having a pouringfountain erected-thereongand conduits leading therefrom; of lateralsleading from such .con- .duits, and terminal conduit sections incommunication with suchlaterals, each of .popies .of this patent may beobtained for five cents each, by addressing the provided with a pouringsaid terminal sections being provided with an outlet being so located asto present equal conduit resistance to the flow of metal from thepouring fountain.

In a metal pouring apparatus, a base having a pouring opening, andconduits leading therefrom; lateral conduits communicating with thefirst-mentioned eonduits; and terminal conduits communicating with thelateral conduits, each of said terminal conduits being provided with anoutlet, the outlets being so positioned as to be equally distant fromthe pouring opening measured through the conduits and to offer equalconduit resistance to the flow of metal.

at. In a metal pouring apparatus, a bed provided with a pouring opening;a plurality of conduits leading from the opening of equal length; aplurality of lateral conduits communicating with the first-mentionedconduits, all being of equal length; and a plurality of terminalconduits communicating with the lateral conduits and provided withoutlets, so that to reach each outlet the metal must travel the samedis-- tance and make the same number of turns in each case.

5. I11 :1 metal pouring apparatus, a bed opening; a plurality ofconduits of equal length and capacity leading from said pouring opening;a plurality of lateral conduits of equal length. and capacity leadingfrom the termination of the first-mentioned conduits; and a plurality ofterminal conduits extending from the extremities of said lateralconduits and each provided with an outlet, the outlets being equallydistant from the pouring opening measured through the conduits and thelengths and capacities of like parts of the conduits offering likeresistances to the flow of metal by reason of the symmetricaldisposition of all the metal passages around the pouring opening.

In testimony whereof we aiiix our signatures.

ROBERT H. IRONS. WILLIAM BRowN. JOHN w. SHEPERDSON.

Commissioner of Patents,

Washington, 10.0?

